Rotary engine.



' Patented Feb. Il, |90,2.

G. P. NIELS-EN. 'ROTARY ENGINE..

(Application file d Oct.l 1, 1901.1

3 sheets-shear 2.

(No Model.)

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No. 693,055. Patented Feb. |l,|902.

G. P. NIELSEN.

ROTARY ENGINE.

(Application iled 0ct.'1, 1901., f-dno Model.) ashun-sheet 3.

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ATENT P. NIELSEN, OF VHITESTONE, NEV YORK.

ROTARYy ENGINE.

SPECIFICATION forming part Of Letters :Patent NO. 693,055, datedFebruary 11, 1902. Application tiled October 1, 1901. Serial No. 77,196.(No model.)

stone, Long Island, in the county of Queens and State of New York, haveinvented certain new and useful Improvements in Rotary En-I gines, ofwhich the following is a fulland complete specification, such as willenable those skilled in the art to which it appertains to make and usethe same.

The object of this invention is to provide a rotary engine which issimple in construction and operation and is strong and durable and whichpossesses great power in proportion to the amount of steam employed andwhich will not get out of order or frequentlyv need repair; and withthis and other objects in view the invention consists in a rot-aryengine constructed as hereinafter described and claimed.

In the drawings forming part of this specitication, in which theseparate parts of my improvement are designated by the same referencecharacters in each of the views, Figure l is a partial sectional sideelevation of a rotary engine constructed according to my invention, theplane of the section being designated bythe line :n in Fig. 2; Fig. 2, apartial section on the line y y of Fig. l; Fig. 3, a partial transversesection on the line a z of Fig. 1; Fig. 4, a plan View of two sets ofvalves which I employ, and Fig. 5 a perspective view of a detail of theconstruction.

In the practice of my invention I provide a cylindrical casing ct,consisting of two similar side pieces a2, which are circular in form andwhich are rigidly and permanently connected by a band or rim b, boltedor otherwise secured to side flan ges a3, with which the sides a2 of thecasing are provided, and the sides a2 of the casing a are each providedon its inner face with an inwardly-directed iiange or rim a4, by meansof which an annular steam-chamber a5 is formed within the casing a andWithin which is a central chamber ce, and passing transversely throughthe casing and through the central chamber 0.6 is a shaft c, to which issecured a central circular disk or plate cl,provided with a hub d2,through which the shaft c passes. The disk or plate e is of the samediameter as the outer diameter of the inwardly-directed rims or angesa", by means of which the annular steam- Vpasses a steam-pipe g5.

chamber a5 and the central chamber a6 are formed, and formed in theinner face of the annular flanges or rims a4 are ann ular grooves a7, inwhich are placed'annular packing-rings which are forced inwardly againstthe disk or plate bythe springs e2.

The band b of the casing a is preferably 'made of two parts, as shown inFig. l, and

provided at its opposite sides with radial plates b2, which are bolt-edtogether and also secured t0 suitable supports, one of which is shown atb3, this construction being clearly shown in Fig. l, and secured to thetop por- `tion of said casing or the band b thereof is anupwardlydirected and preferably-inclined supplemental casing g, composedof two parts g2 and in the top of which is a steam-chamber (3, closed bya plate g4, through which The separate parts g2 of the supplementalcasing g or the side Walls thereof are quite thick, as shown in Fig. 1,and in practice, in addition to being bolted to the rim or band t) ofthe casing a, as shown at g in Fig. l, are also bolted together by meansof side lugs or projections Q7, with which each of said parts areprovided, two of these lugs or projections being shown in Fig. 2.

Between the separate parts g2 of the supplemental casing gis alongitudinal chamber h, and formed in the rim or band Z) is a passageh2, communicating therewith, and in the upper portion of said parts g2of the supplemental casing g is a passage h3, which forms acommunication between the steam-chamber g3 and the chamber h, andmounted in the chamber h and movable in the passages h2 and. h3 is aslide h4, the lower end of which is beveled at its opposite sides, asshown at h5, and the said walls of the separate parts g2 of the casing gare provided in the passage h3 with spring-actuated packings h6, whichbear on said slide, and in the rim or band b at the opposite sides ofthe passage h2 are similar spring-actuated packings k7, which also bearon said slide.

Secured to the disk or plate d., having the hub d2, through which theshaft c passes, is a triangular piece or block d3, which may be formedintegrally with said disk or plate, if desired, and which serves as apiston, which moves in the annular steam-chamber a5, and

said block d5 is also provided at its outer edge with a spring-actuatedpacking d4. The piston-block cl3 is of such dimensions as to exactlyfill or fit the annular steam-chamber a5 and to move therein and iscarried around in said annular steam-chamber by the disk or plate c7 asthe shaft c is revolved.

Mounted in or passing through the side walls of the chamber' 7L, formedin the parts g2 of the supplemental casing g, and at the top and bottomportions of said chamber are two sets of shafts the separate members ofwhich are designated, respectively, by the reference characters t andt2, and these shafts are provided with an tif riction-rollers t5, whichbear on the slide 77.4, and at the opposite sides of the supplementalcasing g and at the bottom thereof are a plurality of steam ports orpassages 7a and 7a2, (shown in dotted lines in Fig. 1,) which extendinwardly and downwardly and open at the bottom of the passage h2,through which the slide h4 passes. The steam ports or passages 7c at oneside are controlled by a cylindrical valve 705 and the ports or passages7c2 at the opposite side are controlled by a valve 7a4.

At each side of the supplemental casing g the separate parts thereof areprovided with a plurality of vertically-arran ged steam ports orpassages 7c5 and 7c, respectively, and these ports or passagescommunicate with the steam-chamber g3 and extend downwardly, and each ofthe passages 7r,5 communicates with one of the corresponding ports orpassages 7c, while each of the ports or passages 705 communicates withone of the corresponding ports or passages 765, and the ports orpassages 705 are all controlled by a cylindrical slide-valve 7c?, whilethe ports or passages 71:5 are all controlled bya cylindricalslide-valve ks. The ports or passages 705 and 7c are shown in dottedlines in Fig. l and in cross-section in Fig. 3, and the valves 7r5 andk7 are connected at one end by a plate m, (shown in dotted lines in Fig.l and in full lines in Fig.

. 4,) and the valves 7a4 and 1&8 are connected at the same end loyaplate'm2, (shown in dotted lines in Fig. l and in full lines in Fig. 4,) andsecured to these plates fm. and m2 are other plates 'm3, provided eachwith an outwardlydirected arm m4, to which is pivoted at m5 a yoke m5,provided with an upwardly-directed lever 'm7, which is pivoted at m5 toan arm m9, which is secured to the adjacent side of the supplementalcasing g or to one part thereof, and by means of the lever m5 the valves795 and k7 and 7a4 and ks, which are arranged in pairs, may be movedlongitudinally or transversely of the supplemental casing, so as to openand close the ports or passages 7c, 7a2, h5, and 7c, it being understoodthat each of said valves is provided with a transverse passage for eachof said ports or passages.

The operation will be readily understood from the foregoing descriptionwhen taken in connection with the accompanying drawings and thefollowing statement thereof.

It will be apparent from the foregoing description that this rotaryengine is reversible, the main power-shaft c being capable of beingdriven in either direction, and this operation results from thearrangement of the steam ports or passages 7c and 7.;5 on one side ofthesupplemental casing g, the corresponding steam ports or passages 7c2and7a on the other side of the double arrangement of slide-valves wh ichcontrols these ports or passages, and the form of the piston-block C75and the slide h4, which operates in connection therewith. Suppose it bedesired to turn the main shaft cto the left when viewed in the positionshown in Fig. l. The steam is admitted through the steam-supply pipe g5and the ports or passages 7c and 765 are open and in communication insuch manner that the 'steam is admitted therethrough to the left of theslide` h4'. In this position of the parts the outer ends of the steamports or passages 7a are closed, and the steam ports or passages 7r5 atthe opposite side of the supplemental casing are open, the ports orpassages 7c5 at said side being closed. As the steam enters the annularsteam-chamber a5 at the let't of the slide h4 in the position of theparts shown in Fig. l the power-shaft c is revolved to the left, thepiston-block d3 moving in the direction of the arrow r, and as the saidshaft and pistonblock revolve the slide 714 passes downwardly over theright-hand side of the piston-block until it strikes the outer wall ofthe chamber d, in which position it entirely closes the annular chambera5. As the shaft c continues to revolve the slide h4 is raised by theopposite beveled side of the piston-block, and as the piston-blockpasses beneath said slide the inner end thereof is flush with the innerentrance to the passage h2, and, as will he understood, the shaft ccontinues to revolve, and the slide 714 again repeats theabove-described operation, said slide passing over the pistonblock 033at each revolution of the shaft c and moving radially at all times. Ateach revolution of the shaft c the exhaust-steam passes out through theports or passages 7a2, which are open during this operation, and at eachrevolution of the shaft c, when the pistonblock d5 is in thel positionshown in Fig. l, fresh steam enters through the ports or passages 7c andoperates upon the right-hand side of the piston-block C75 and continuesthe revolution of the shaft c. When it is desired to reverse themovement of the piston-shaft, the ports or passages 705 and 7a2, whichcommunicate with the annular chamber a5, are open, the outer ends of theports or passages k2 being closed, while the ports or passages 7a on theopposite side are open to admit of the exhaust of the steam. The valves765 7a4 and 79" las, which are arranged in pairs, as hereinbeforedescribed, are operated simultaneous] y by the/movement of the lever m7,and only a slight movement is necessary for these valves in order toaccomplish the desired result.

Having thus fully described my invention,

IOS

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what I claim as new, and desire to secure by Letters Patent, is-

l. A rotary engine comprising acircular casing provided with a centralcircular chamber and an annular steam-chamberinelosing the same, a shaftpassing centrally through the central chamber and provided Within saidchamber With a disk or plate, the perimeter of which passes through theannular wall of the central chamber7 a piston-block connected with theperimeter of said disk or plate and movable in the annularsteam-chamber, a supplemental casing connected with one side of theErst-named casing and provided in its outer end with a steam-chamber andmeans for admitting steam thereto, a steamoperated slide mountedcentrally in said supplemental casing radially of the rst-named casingand extending into the annular steamchamber, steam ports or passages inthe opposite sides of the supplemental casing and in communication withsaid steam-chamber, valves for controlling the said ports or passages,other steam ports or passages also in the opposite sides of thesupplemental casing and in communication With the first-named ports orpassages and with the annular steamchamber at the opposite sides of saidslide, said last-named ports or passages being so formed as to openoutwardly through the side of the supplemental casing and being alsoprovided outside of their com munication with the first-named ports orpassages with valves by which they are controlled, substantially asshown and described.

2. A rotary engine comprising a circular casing, provided With a centralcircular chamber and an annular steam-chamber inelosing the same, ashaft passing centrally through the central chamber and provided Withinsaid chamber with a disk or plate, the perimeter of which passes throughthe annular wall of the central chamber, a piston-block connected withthe perimeter of said disk or plate and movable in the annularsteam-chamber, a supplemental casing connected with one side of thefirst-named casing and provided in its outer end with a steam-chamberand means for admitting steam thereto, a steamoperated slide mountedcentrally in said supplemental casing radially of the first-named casingand extending into the annular steamchamber, steam ports or passages inthe 0pposite sides of the supplemental casing and in communication withsaid steam-chamber, valves for controlling the said ports or passages,other steam ports or passages also in the opposite sides of thesupplemental casing and in communication with the first-named ports orpassages and with the annular steamchamber at the opposite sides of saidslide, said last-named ports or passages being so formed as to openoutwardly through the sides ofl the supplemental easing and being alsoprovided outside of their communication with the first-named ports orpassages with valves by Which they are controlled, the valves in saidports er passages at each side of the supplemental easing being arrangedin pairs and connected and longitudinally movable, substantially asshown and described.-

3. In a rotary engine, a circular easing provided with a centralcircular chamber and an annular steamchamber surrounding the same, ashaft passing centrally through the central chamber and provided withinsaid chamber With a disk or plate, the perimeter of Which passes throughthe annular Wall of said chamber and is provided With a pistonblockmovable in the annular steam-chamber, a supplemental casing connectedwith the circular casing at one side thereof and extending radiallytherefrom and provided centrally with a steam-operated slide movable inand radially of the annular steamchamber, a` steam-chamber Within thesupplemental casing and means for admitting steam therefrom to theannular steam-chamber at either side of said slide, substantially asshown and described.

In testimony that l claim the foregoing as my invention I have signed myname, in presence of the subscribing witnesses, this 30th day ofSeptember, 1901.

GEORGE P. NIELSEN.

Witnesses:

F. A. STEWART, F. F. TELLER.

